IFC-DP (メルコ) PCI SCSI-2 interface board.Red LED (light emitting diode) on board Is the access LED, the green LED is the terminator LED. Built-in 50-pin SCSI cable connector The four pins aside are SCSI bus LED connectors.The board's SCSI ID is fixed at 7. Jumper pins on the board are both external and internal when used on a PC / AT compatible machine Turn off the terminator on the board when a SCSI device is connected to the connector of Things to do (remove the jumper if you want to turn off). As far as the author actually confirmed, the maximum capacity of the HDD that can be recognized seems to be 8 GB.